Add indent.align_hanging metadata

This allows indentation queries to bypass the default behavior of
indenting liens following a hanging open_delimiter differently.
(Primarily useful for lisp like languages)

lua/nvim-treesitter/indent.lua

@@ -291,7 +291,7 @@ function M.get_indent(lnum)
         if c_delim_node then
           c_srow, _ = c_delim_node:start()
         end
-        if o_is_last_in_line then
+        if o_is_last_in_line and not metadata['indent.align_hanging'] then
           -- hanging indent (previous line ended with starting delimiter)
           -- should be processed like indent
           if should_process then